Globally, more carbon is stored in the soil than in any other terrestrial form (Brevik 2013; Woodall et al. 2015). Soil organic carbon (SOC) may contain more than three times the carbon found in the atmosphere and terrestrial vegetation combined (Qafoku 2014). Soil organic carbon is derived from soil organic matter (i.e., decomposition of living organisms) and is generally about 58 percent of soil organic matter by weight (Pribyl 2010). Storage of SOC is limited by soil physical and chemical composition as well as microbial and plant community types, all of which are determined by soil moisture and temperature (Emmet et al. 2004; Kardol et al. 2010).
nonforest carbon stocks
soil organic carbon (SOC)
Reeves, Matthew C.; Hanberry, Brice; Bruggink, Jeffrey L.; Krebs, Michael A.; Campbell, Steven B.; Baggett, L. Scott. 2020. A novel approach for estimating nonforest carbon stocks in support of forest plan revision. Res. Note RMRS-RN-86. Fort Collins, CO: U.S. Department of Agriculture, Rocky Mountain Research Station. 20 p.